{"id":"CVE-2023-4562","aliases":["EUVD-2023-54417","GHSA-3728-9cr9-4xwr"],"status":"published","title":"Information Disclosure, Information Tampering and Authentication Bypass Vulnerability in MELSEC-F Series main module","description":"Improper Authentication vulnerability in Mitsubishi Electric Corporation MELSEC-F Series main modules allows a remote unauthenticated attacker to obtain sequence programs from the product or write malicious sequence programs or improper data in the product without authentication by sending illegitimate messages.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01214,"percentile":0.68778,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2023-10-13T01:26:06Z","modified":"2026-06-17T06:38:05Z","products":[{"vendor":"mitsubishi 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